/Engine/Source/Runtime/SlateCore/Public/Application/SlateApplicationBase.h
Reorders an array of windows so the specified window is "brought to the front"
void ArrangeWindowToFrontVirtual ( [TArray](API\Runtime\Core\Containers\TArray)< [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [SWindow](API\Runtime\SlateCore\Widgets\SWindow) >> & Windows, const [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [SWindow](API\Runtime\SlateCore\Widgets\SWindow) > & WindowToBringToFront )